Hello, This question may have been asked before, but a little searching on the forum last night and it didn't pop right up. There are a lot of old navy 1/2 ton AD shells coming available, and I am wondering what sheet metal parts will interchange with a 1 ton 3800 series truck, or for that matter, a 3600 3/4 ton. I read somewhere that the grills are larger on a 3800, and that the fenders might be larger or have different mounting holes because of larger wheels. Then somewhere else I read that everything under 1 1/2 ton is the same?? Before I make some big stupid mistake and buy a truck that won't help me, I'd like to get the straight poop.